Every Wednesday, for the first few weeks from the launch, our support team will be on hand to offer enhanced support to forum members. Get super-quick responses to your questions!
Just reply to this topic, and we’ll take care of you from there 
Hi, this is Xiaojing. May I ask a question about how to collect additional data for the same study? I ran a study a week ago, and I now need more participants. Since it is the same survey, I created a copy of the same study on Prolific. Do I just launch the study copy? Is there any mechanism on Prolific that prevents the same participants from taking the survey again? Thank you for your help in advance. Looking forward to hearing from you. Thanks!
3 Likes
Hello researchers 
I’m Charlie, I work on the Support Team and I’ll be answering your queries this afternoon.
No question is too big or too small, so just ask anything!
Hi Xiaojing, thanks for your question!
The best way to do this is to apply pre-screening before you launch your study.
To exclude participants from a previous study from participating again please follow these steps:
- When creating a study, scroll down to the Audience section.
- Add a new custom screening filter and search for “Previous Studies”.
- Select the names of the studies whose participants you wish to exclude from taking part in the new study.
- If newly completed studies do not appear on this list, you may need to refresh the page and they should appear.
- Applying the “Previous Studies” screener will also exclude participants who have Returned or Timed Out submissions in your previous study.
Please note: The previous studies you want to block must be in the “Completed” section of your dashboard. These are studies that have been stopped and all participants submissions have been reviewed with payment complete.
I hope this helps, please just let me know if you have any more questions!
Thanks 
2 Likes
Thank you for your quick response, Charlie. I appreciate it! Also, apologies for posting my question as a reply to all. I am new to the forum. So, I am probably not following the rules. If you can delete or hide my question, then that would be great. Thanks very much again!
2 Likes
You’re very welcome Xiaojing!
No need to apologise, you didn’t do anything wrong Replies are public so other members of the community can learn from your questions and our answers.
1 Like
That’s a wrap for today. I hope to meet more of you at the next one 
Until then, happy researching!
Goodbye
Charlie
Hi everyone
It’s Wednesday afternoon which means it’s time for our Open Office!
I’m here until 3pm, so just ask anything 
1 Like
Good afternoon!
It’s time for Open Office Wednesday again, I’ll be here until 3pm.
This will be our last one, so if you have any burning questions, get them in today
1 Like
This is a very interesting information! I’ve always used the “Blocklist” for this purpose, but I think this tool is more effective and efficient. Great to know!
1 Like
Glad it’s useful!